在平板电脑3.0轻扫手势 [英] Swipe gesture in tablet 3.0

问题描述

我已经提出申请，其中刷卡手势检测用于左到右放;从右到左。
我得到2.2 AVD模拟器成功，但是当我尝试使用相同的code片剂3.0它不能正常工作

请告诉我，什么是错。

 私有静态最终诠释SWIPE_MIN_DISTANCE = 120;
    私有静态最终诠释SWIPE_THRESHOLD_VELOCITY = 200;
   私有类GestureListener扩展SimpleOnGestureListener {
        @覆盖
        公共布尔onFling（MotionEvent E1，E2 MotionEvent，浮velocityX，
                浮动velocityY）{
            如果（e1.getX（） -  e2.getX（）＆GT; SWIPE_MIN_DISTANCE
                    ＆功放;＆安培; Math.abs（velocityX）＆GT; SWIPE_THRESHOLD_VELOCITY）{

                Toast.makeText（RssActivity.this，从右至左，
                        Toast.LENGTH_LONG）.show（）;
                SetNewRightclickActivity（）;
                Log.i（TAG，从右至左）;
                返回true; //从右到左

            }否则，如果（e2.getX（） -  e1.getX（）＆GT; SWIPE_MIN_DISTANCE
                    ＆功放;＆安培; Math.abs（velocityX）＆GT; SWIPE_THRESHOLD_VELOCITY）{

                Toast.makeText（RssActivity.this，从左至右，
                        Toast.LENGTH_LONG）.show（）;
                Log.i（TAG，左到右）;
                SetNewLeftclickActivity（）;
                返回true; // 从左到右

            }
            如果（e1.getY（） -  e2.getY（）＆GT; SWIPE_MIN_DISTANCE
                    ＆功放;＆安培; Math.abs（velocityY）＆GT; SWIPE_THRESHOLD_VELOCITY）{

                返回true; //从下到上
            }否则，如果（e2.getY（） -  e1.getY（）＆GT; SWIPE_MIN_DISTANCE
                    ＆功放;＆安培; Math.abs（velocityY）＆GT; SWIPE_THRESHOLD_VELOCITY）{

                返回true; // 从上到下
            }
            返回false;
        }
    }
 

主要::

  @覆盖
    公共无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.rssheader）;

        gestureDetector =新GestureDetector（新GestureListener（））;
        gestureListener =新View.OnTouchListener（）{
            公共布尔onTouch（视图V，MotionEvent事件）{
                返回gestureDetector.onTouchEvent（事件）;
            }
        };
 

解决方案

您需要设置 gestureListener （在的onCreate 法）到一个视图您要检测挥笔。

---

设置ID到一个视图/的ViewGroup在布局中的 rssheader.xml ，例如：

 ＆LT; LinearLayout中的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
    机器人：layout_width =FILL_PARENT
    机器人：layout_height =FILL_PARENT

    机器人：ID =@ + ID / myLayout
    机器人：可点击=真正的＆GT;

＆LT; / LinearLayout中＆GT;
 

现在获取该ID的活动类，并设置监听器，它

  @覆盖
公共无效的onCreate（包savedInstanceState）{
    super.onCreate（savedInstanceState）;
    的setContentView（R.layout.rssheader）;

    的LinearLayout LL =（的LinearLayout）findViewById（R.id.myLayout）;

    GestureDetector gestureDetector =新GestureDetector（新GestureListener（））;
    OnTouchListener gestureListener =新View.OnTouchListener（）{
        公共布尔onTouch（视图V，MotionEvent事件）{
            返回gestureDetector.onTouchEvent（事件）;
        }
    };

    ll.setOnTouchListener（gestureListener）;

}
 

I have make application in which swipe Gesture detection is used for left to right & right to left.
I got success with 2.2 AVD emulator, but when I try to use same code in tablet 3.0 it not working

Please tell me whats wrong.

private static final int SWIPE_MIN_DISTANCE = 120;
    private static final int SWIPE_THRESHOLD_VELOCITY = 200;
   private class GestureListener extends SimpleOnGestureListener {
        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
                float velocityY) {
            if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE
                    && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {

                Toast.makeText(RssActivity.this, "Right to left",
                        Toast.LENGTH_LONG).show();
                SetNewRightclickActivity();
                Log.i(TAG, "Right to left");
                return true; // Right to left

            } else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE
                    && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {

                Toast.makeText(RssActivity.this, "Left to right",
                        Toast.LENGTH_LONG).show();
                Log.i(TAG, "Left to right");
                SetNewLeftclickActivity();
                return true; // Left to right

            }
            if (e1.getY() - e2.getY() > SWIPE_MIN_DISTANCE
                    && Math.abs(velocityY) > SWIPE_THRESHOLD_VELOCITY) {

                return true; // Bottom to top
            } else if (e2.getY() - e1.getY() > SWIPE_MIN_DISTANCE
                    && Math.abs(velocityY) > SWIPE_THRESHOLD_VELOCITY) {

                return true; // Top to bottom
            }
            return false;
        }
    }

Main::

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.rssheader);

        gestureDetector = new GestureDetector(new GestureListener());
        gestureListener = new View.OnTouchListener() {
            public boolean onTouch(View v, MotionEvent event) {
                return gestureDetector.onTouchEvent(event);
            }
        };

解决方案

You need to set gestureListener (in onCreate method) to a view on which you want to detect swipes.

---

Set id to a view/viewgroup in your layout in rssheader.xml, for example:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"

    android:id="@+id/myLayout"
    android:clickable="true">

</LinearLayout>

now fetch that id in Activity class and set listener to it

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.rssheader);

    LinearLayout ll = (LinearLayout) findViewById(R.id.myLayout);

    GestureDetector gestureDetector = new GestureDetector(new GestureListener());
    OnTouchListener gestureListener = new View.OnTouchListener() {
        public boolean onTouch(View v, MotionEvent event) {
            return gestureDetector.onTouchEvent(event);
        }
    };

    ll.setOnTouchListener(gestureListener);

}

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